My opinion is that lowering the compression to 9:1 ish you are losing engine caracteristics. It's a high compression, high revving engine.

If you only lower compression with the 2mm HG, you will be near stock and still be safe on 400whp.

Ofcourse, if you want 500whp on normal gas you will need the 3mm HG.
Or you could go race gas.

 

[QUOTE=YuriArts,Jan 31 2007, 09:41 AM] My opinion is that lowering the compression to 9:1 ish you are losing engine

 

I think he is talking about off boost driving at lower rpms. At 11:1 compression you will have a little more low end torque off boost and the driveability is a little better.

 

I have a Cometic gasket and the fitment was not exactly perfect. It has some high spots and what not but if Inlinepro offered a 89mm bore 1mm gasket I would have gotten that.

 

what do you mean by drivability?? alil confused on that, my car drives perfectly fine on low rpms. I have driven my car n/a with a 3mm headgasket since we installed the gasket first and made sure nothing was wrong, yes i felt a lack in power, big amount, so i do not think a 2mm would feel "that much better" or anything close to "stock" I understand what you mean about comparing an 11:1 compression motor to a motor with a gasket to lower compression, but he is talking about 2mm to 3mm

 

I've also read that the Cometic gaskets tend to leak whereas the Inline gasket is a perfect fit. I have never heard of one leaking. HOWEVER, I think I read that Inline CALLED Cometic and brought the issue to their attention and that Cometic revised their product because of this.

If this is the case I'd buy an Inline based entirely on their commitment to bettering the platform.

 

[QUOTE=AROD,Jan 31 2007, 08:18 AM] too much?? What do you mean by too much??

once a person makes 400 hp, they get bored of it, he'll want more, if hes gonna go thru the trouble of gettin a gasket might as well go 3mm so you can up the boost when you get bored with 400.

 

Can someone confirm that current Cometic 2mm gaskets are revised and don't exhibit the problems of the earlier ones?

A couple of us here are interested and would like to know.

 

By dropping the compression an extra point u are not even going to feel the extra sluggishness during off boost driving in the real world you 'think' you would get. Together with advantage of having the extra room for error in tuning (gas, environment deviations etc..) with the 3mm, and the potential to up the boost further, I really can't see why anyone would want to go 2mm!

 

Actually you can safely run quite a bit more boost than that